Can someone explain why
Harriet is seen as a feminine derivative of
Henry, in detail, as opposed to having another origin? My question might apply to
Harry as well.
I ask because the verb "to harry" was present in the English language for a long time prior to the spread of the name
Harriet, as far as I can tell, and the surname Harriot would have also maybe been familiar to people. So how do we know that
Harriet wasn't originally understood in that way, akin to the rise of
Madison as a girl's name today?